To cite package ‘xplus’ in publications use:

Robles A (2026). xplus: Positive and Unlabeled Learning from Unbalanced Cases and Sparse Structures. R package version 1.0.2, https://CRAN.R-project.org/package=xplus.

Corresponding BibTeX entry:

  @Manual{,
    title = {xplus: Positive and Unlabeled Learning from Unbalanced
      Cases and Sparse Structures},
    author = {Angel Robles},
    year = {2026},
    note = {R package version 1.0.2},
    url = {https://CRAN.R-project.org/package=xplus},
  }